What is the maximum system voltage for this panel?

The maximum system voltage is 1000V DC, suitable for various solar power systems.

Where is the manufacturer located?

Our factory is located in Longhua, Baoan, Shenzhen, Guangdong Province, China, near Shenzhen airport.

20W 5V 18V Polycrystalline PV Module Solar Panel DC USB Charger Solar Power Supply

Name: 20W 5V 18V Polycrystalline PV Module Solar Panel DC USB Charger Solar Power Supply
Brand: Shenzhen Just-Solar Co., Ltd.
SKU: 744295762

Guangdong, ChinaShenzhen Just-Solar Co., Ltd.

US$0.20

1-999 W

US$0.18

1,000-4,999 W

US$0.16

5,000-9,999 W

US$0.14

10,000+ W

Sample price:US$0.22/w.Request sample

Product profile

Customization

Available

Warranty

10 Years

Number of Cells

Model NO.

JS-SPP020W

Application

Light Industry

Condition

New

Certification

EST, ISO, CB, CE

Material

Polycrystalline Silicon

Output Power (W)

20W

Voltage (V)

18V

Dimension (mm*mm)

400*350*17mm

Open-Circuit Voltage (Voc)

22.5

Short-Circuit Current (Isc)

1.22

Operating Voltage (Vmp)

17.96

Operating Current (Imp)

1.11

Module Weight (Kg)

1.7kgs

Transport Package

Carton and Pallets

Specification

CE, ROHS, TUV, IEC61215, IEC61730

Trademark

JUST

Origin

China

HS Code

8541409000

Production Capacity

10000PCS/Month

Key features

High Efficiency Cells: Polycrystalline silicon cells with 20.5-22% efficiency for superior power generation.

Durable Construction: Features low-iron tempered glass, anodized aluminum frame, and IP65 junction box.

Long Warranty: 10-year warranty covering 95% power output, ensuring long-term reliability.

Global Certifications: Certified by TUV, CE, RoHS, FCC, PSE, IEC61215, and IEC61730 standards.

OEM/ODM Support: Professional manufacturer offering custom branding and logo printing services.

Fast Sample Delivery: Sample orders can be delivered within 3 days for quick evaluation.

Robust Load Resistance: Withstands max static loads of 2400Pa and hail impacts up to 25mm diameter.

Company profile

Shenzhen Just-Solar Co., Ltd.

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2004-05-05Nearest Port: SHEN ZHENAverage Response Time: ≤9.05hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, FAS, DDP, FCA, EXW

AI-Powered supplier vetting

SummaryShenzhen Just-Solar Co., Ltd. is identified as a China-based manufacturer/factory operating in Guangdong, with separate production entities described for domestic and overseas business. The supplier reports multiple management-system certifications, 50 quality-control staff, more than 10 production lines, extensive solar-product output, export activity since 2004, and sales coverage across multiple global regions. It states that it provides product design, R&D, manufacturing, shipment arrangement, warranties, after-sales service, and market suggestions. The available information supports strengths in manufacturing scale, export experience, product development, customization, and stated service capabilities. However, financial credibility cannot be assessed because relevant financial information is excluded, and the representative-title record is invalid or unusable.

Supplier typeThe supplier is explicitly classified as a Manufacturer/Factory, with production locations in Shenzhen, Guangdong, China. Its descriptions identify separate production entities for domestic and overseas business, supporting direct manufacturing involvement rather than a purely trading profile.

CertificationsThe supplier lists BSCI, ISO 9000, ISO 9001, ISO 14001, ISO 14000, HSE, GMP, EICC, and QC 080000 as supplier-management-system certifications. The slice does not provide certificate numbers, validity dates, issuing bodies, or scopes, so the assessment is based on the stated holdings only.

After-Sales capabilityThe supplier explicitly states that it provides a warranty period for each product, after-sale service, and reasonable suggestions for solar products and markets. It also describes support across the full shipment process, indicating a stated service capability beyond production.

R&D capabilityThe supplier states that it designs, researches, develops, and manufactures solar products according to customer requirements, and reports total R&D-engineer experience of 31–40 years. These statements support product-development capability, although they do not quantify patents, laboratories, or new-product launches.

Production capacityThe supplier is identified as a factory and reports more than 10 production lines, 50 quality-control staff, and substantial stated output for solar systems, panels, chargers, and lights. It also lists a broad solar-product portfolio and export coverage across multiple regions, supporting significant production breadth and capacity.

Customization capabilityThe supplier explicitly states that it designs, researches, develops, and manufactures solar products according to customer requirements and supplies products in customers' quality classes. This directly supports customization in product design and quality specifications.

Client casesThe supplier lists Shell, Geodrill, Newmont, Tullow, and Heineken as main customers. These named customer references provide explicit evidence of customer cases, although the slices do not include project details, transaction scope, or verification documentation.